title: Half-sandwich bis(propiolamidinate) rare-earth metal complexes: synthesis, structure and dissociation of the cyclopentadienyl ligand via competition with an amidinate.
abstract: A comparative study on the stabilizing ability between C5Me4(SiMe3) (Cp' for short) and amidinate in rare-earth metal complexes is investigated. Cp' is found to dissociate from half-sandwich bis(propiolamidinate) lanthanides via competition with a propiolamidinate, which clearly shows that the coordinative ability of chelate amidinate is stronger than that of η(5)-Cp' under the present conditions.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China. wx_zhang@pku.edu.cn.
authors.forename: Ling
authors.initials: L
authors.lastname: Xu
authors.forename: Yu-Chen
authors.initials: YC
authors.lastname: Wang
authors.forename: Wen-Xiong
authors.initials: WX
authors.lastname: Zhang
authors.forename: Zhenfeng
authors.initials: Z
authors.lastname: Xi